Power supply system for a linear motor
US4454457A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1982 |
| Grant date | Jun 12, 1984 |
| Priority date | — |
| Expiry date | Jun 14, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/64
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a linear motor composed of a propelling coil laid on continuously along a track and a field system mounted on a vehicle for driving it, the propelling coil of an enormous length is sectioned into a number of propelling coil units which are connected alternately to two sets of feeders by means of switches, the feeder sets being supplied with polyphase currents from different power converters, respectively. The propelling coil units are connected in series to one another without any interposed insulation and sectioned by a number of lead conductors so that every pair of the adjacent propelling coil units has a common coil portion shared by them and having a length not smaller than that of the vehicle. A pair of the polyphase lead conductors connected to each of the propelling coil units are connected, respectively, to going feeders and return feeders constituting the set of feeders through switches. Change-over of power supply between the adjacent propelling coil units is performed during a period in which the vehicle is running along the common coil section by closing and opening the associated switches and controlling power converters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.